Journal
TETRAHEDRON LETTERS
Volume 49, Issue 47, Pages 6646-6649Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.09.033
Keywords
Anion sensing; Diaminophenazine (DAP); Host-guest chemistry; Urea/thiourea; UV-vis spectroscopy
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Funding
- Department of Science and Technology (Govt. of India) [SR/S1/OC-54/2003]
- Council of Scientific and Industrial Research
- University of Delhi
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The novel colorimetric receptors 2,3-bis-N-(9,10-diaza-anthracen-1-yl)-N'-phenylurea and 2,3-bis-N-(9,10-diaza-anthracen-1-yl)-N'-phenylthiourea have been prepared by the reaction of 2,3-diaminophenazine with phenylisocyanate and phenylisothiocyanate, respectively, in quantitative yields. The interaction and colorimetric sensing properties of receptor = 2 and 3 with different anions were investigated by naked eye, UV-vis and fluorescence spectroscopy in DMSO. The receptors effectively and selectively recognized biologically important F-, CH3COO-, H2PO4- in the presence of other anions, Such as Cl-, Br-, l(-) and HSO4- in DMSC. (C) 2008 Elsevier Ltd. All rights reserved.
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